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121

F41 (Carriage error) 31 00 00 00 1. Carriage mechanism does

    not work properly.

1. Restart the scanner and check whether
    the carriage goes back to the home
    position.
2. Execute “Feed” test (Flatbed mode) in
    Sec.9.3.6 to check the carriage
    mechanism.
3. Check the carriage shaft is not
    distorted.
4. Check the carriage belt tension and
    allocation. And adjust the tension, as
    required. (See 8.2.16.)
5. Check whether rotation from the
     carriage motor’s gear is transmitted to
     the carriage belt properly.

2. Carriage Motor does not
    work properly.

1. Check the carriage mechanism
    condition, by carrying out Feed test.
     (See 9.3.6.)
2. Check the following connection and
     soldering condition on each connector.
    

→

 Carriage Motor to CN4002 (DRIVE

         Board)
3. Replace faulty cables.
4. Replace the Carriage Motor.

3. Carriage Motor control circuit
   does not work properly.

1. Check the following connection and
    soldering condition on each connector.
    a. CN4005 (DRIVE Board) to CN2004
         (CENTER Board)
    b. CN1001 (CONTROL Board) to
        CN2001 (CENTER Board)
2. Check the soldering condition of the
    IC4005 and its surrounding circuit on
    the DRIVE Board.
3. Check the following signals on the
    DRIVE Board.
  a. IC4005-12th pin (CLK): 500 to 2kHz
      (when executing “Feed” test (Flatbed
       mode))
   b. IC4005-19th pin (VREF): 2.3 V or less
   c. IC4005-15th pin (ENABLE): 5 V(when
       executing “Feed” test (Flatbed
       mode))
4. Check the soldering condition of 
    IC2032 and its surrounding circuit on
    the CENTER Board to repair it.
5. Replace faulty parts or boards.

122

4. Carriage Home Detector
    does not work correctly.

1. Check the alignment of the Carriage
    Home Detector and its actuator is
    proper.
2. Execute “Key / Sensor” test in
    Sec.9.3.6 to check the sensor condition.
3. Check the following connection and
    soldering condition of each connector.
     a. CN10 (CARRIAGE HOME
         DETECTOR Board) to CN2005
         (CENTER Board)
4. Check the soldering condition of 
    IC3 and its surrounding circuit on the
    CARRIAGE HOME DETECTOR Board
     to repair it.
5. Check the following signals.
    

→

 CAHOME signal (CN10-2nd pin on

         the CARRIAGE HOME DETECTOR
         Board, IC2027-8th pin on the
         CENTER Board): Approx. 3 V (when
           the actuator interrupts the detector)
6. Replace faulty parts or boards.

F50 (Waiting 
Sensor's adjustment
error)

40 00 00 00 1. Paper dust exists on or

   around the Waiting Sensor.

1. Blow off the dust with the included
    accessory blower. (See 7.2.)
2. Execute “Key / Sensor” and “Sensor
    Sensitive Level” tests in Sec.9.3.6 to
    check the sensor condition.

2. Waiting Sensor does not
   work correctly.

Refer to the 5th item on the Classification
Code U11.

F51 (Starting
Sensor's adjustment
error)

41 00 00 00 1. Paper dust exists on or

   around the Starting Sensor.

1. Blow off the dust with the included
    accessory blower. (See 7.2.)
2. Execute “Key / Sensor” and “Sensor
    Sensitive Level” tests in Sec.9.3.6 to
    check the sensor condition.

2. Starting Sensor does not
    work correctly.

Refer to the 3rd item on the Classification
Code U12.

F52 (Skew (R)
Sensor's adjustment
error) 

42 00 00 00 1. Paper dust exists on or

   around the Skew (R) Sensor.

1. Blow off the dust with the included
    accessory blower. (See 7.2.)
2. Execute “Key / Sensor” and “Sensor
    Sensitive Level” tests in Sec.9.3.6 to
    check the sensor condition.

2. The Skew (R) Sensor does
    not work correctly.

Refer to the 7th item on the Classification
Code U20.

F53 (Skew (L) 
Sensor's adjustment
error) 

43 00 00 00 1. Paper dust exists on or

   around the Skew (L) Sensor.

1. Blow off the dust with the included
    accessory blower. (See 7.2.)
2. Execute “Key / Sensor” and “Sensor
    Sensitive Level” tests in Sec.9.3.6 to
    check the sensor condition.

2. The Skew (L) Sensor does
    not work correctly.

Refer to the 6th item on the Classification
Code U20.

F55 (Ending 
Sensor's 
adjustment error)

45 00 00 00 1. Paper dust exists on or

    around the Exit Sensor.

1. Blow off the dust with the included
    accessory blower. (See 7.2.)
2. Execute “Key / Sensor” and “Sensor
    Sensitive Level” tests in Sec.9.3.6 to
    check the sensor condition.

2. Ending Sensor does not
    work correctly.

Refer to the 3rd item on the Classification
Code U14.

123

F60 (Front-side gain
adjustment error)

50 00 00 00 1. ADF Glass (F) is dirty.

Clean the glass surface. (See 7.2.)

2. CIS (F) LED does not light.

1. Execute “CIS Level” test in Sec. 9.3.6
    to check the peak level after turning the
    Reference Plate (F) to white.
2. Check whether the CIS (F) LED lights
    during CIS Level test. 
3. Check the following connections and
    soldering condition on each connector:
       a. CIS (F) to CN3001 and CN3002 
             (CIS (F) RELAY Board)
       b. CN3004 (CIS (F) RELAY Board)
           to CN2009 (CENTER Board)
4. Check the LED control circuits on the
    CENTER Board.
   

→ Q2010,Q2012,Q2016,Q2018,Q2022,

         Q2024 and their surrounding parts.
5. Replace faulty parts or boards.

3. Pixel data from CIS (F) or
    image processing circuit
    has some problems

1. Check the following connections and
    soldering condition on each connector:
       a. CN3004 and CN3005 (CIS (F)
           RELAY Board) to CN2008   and
           CN2009 (CENTER Board)
2. Check the following power supply for
    the CIS (F) RELAY Board:
    

→ CN3004-7th or 8th pin: 12 V

    

→ CN3004-9th or 10th pin: 5 V

3. Check the soldering condition of the
    IC2009 to IC2012, and their
    surrounding parts on the CENTER
    Board.
4. Replace faulty parts or boards.

F61 (Front-side
black level error)

51 00 00 00 1. Pixel data from CIS (F) or

    image processing circuit
    has some problems.

1. Execute “CIS Level” test in Sec.9.3.6
    to check the peak level.
2. Replace the CIS (F) or CENTER 
    Board.

124

F62 (Back-side gain
adjustment error)

52 00 00 00 1. ADF Glass (B) is dirty.

Clean the glass surface. (See 7.2.)

2. CIS (B) LED does not light. 1. Execute “CIS Level” test in Sec. 9.3.6

    to check the peak level after turning the
     Reference Plate (B) to white.
2. Check whether CIS (B) LED lights
     during CIS Level test. 
3. Check the following connections and
     soldering condition on each connector:
      a. CIS (B) to CN3006 and
          CN3007 (CIS (B) RELAY Board)
      b. CN3011 (CIS(B) RELAY Board) to
          CN3024 (POWER RELAY Board)
      c. CN3023 (POWER RELAY Board) to
          CN2010(CENTER Board)    
4. Check the LED control circuits on the
     CENTER Board.
   

→ Q2011,Q2013,Q2017,Q2019,Q2023,

        Q2025 and their surrounding parts
5. Replace faulty parts or boards.

3. Pixel data from CIS (B) or
    image processing circuit
    has some problems.

1. Check the following connection and
    soldering condition on each connector:
        a. CN3010 (CIS (B) RELAY Board)
            to CN2011 (CENTER Board)
2. Check the following power supply for
    the CIS (B) RELAY Board:
        

→ CN3009-3rd pin: 12 V

        

→ CN3009-1st pin: 5 V

3. Check the soldering condition of the
  IC2013 to IC2016, and their surrounding
  parts on the CENTER Board.
4. Replace faulty parts or boards.

F63 (Back-side
black)

53 00 00 00 1. Pixel data from CIS (B) or

    image processing circuit
    has some problems.

1. Execute “CIS Level” test in Sec.9.3.6
    to check the peak level.
2. Replace the CIS (B) or CENTER
    Board.

F80 (Double Feed
Detector
adjustment error)

60 00 00

xx 1. Double Feed Detector (G)

   does not work properly.

Refer to the 6th item on the Classification
Code U23.

2. Double Feed Detector (R)
    does not work properly.

Refer to the 6th item on the Classification
Code U23.